Calculate your estimated due date (EDD) and track your progress.
A typical pregnancy lasts about 40 weeks, or 280 days, from the first day of your last menstrual period (LMP). While this is the "standard" calculation, every woman and every pregnancy is unique.
Our calculator uses Naegele's Rule, the standard method used by healthcare providers. It assumes a 28-day menstrual cycle with ovulation occurring on day 14. If your cycle is shorter or longer, your actual due date might vary slightly.
Only about 4-5% of babies are born exactly on their estimated due date. Most are born within a two-week window before or after.